We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleWhen does Parkinson disease start?AuthorsSavica R; Rocca WA; Ahlskog JEPublicationArchives of neurology, 2010, Vol 67, Issue 7, p798ISSN1538-3687Publication typearticleDOI10.1001/archneurol.2010.135